Undervoltage

What does UP1 mean?

This fault indicates that the input voltage to the Altivar 212 drive is too low, potentially causing instability or improper operation. This can lead to a drive trip to prevent damage.

• The input voltage to the drive is too low.

Click steps to track your progress.

1. 1

   Measure the input voltage at the drive terminals (R/L1, S/L2, T/L3) and rectify the supply trouble.

2. 2

   Select the correct setting for parameter F627 ([Undervolt detect.]).

3. 3

   Enable catch on the fly function (F301).

4. 4

   Set parameter F302 ([Supply loss behav.]) to 2 (Freewheel).